SG7915T

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits.
• Characteristics:
  • Provides a fixed negative voltage output.
  • High precision and low dropout voltage.
  • Compact size and easy to integrate into circuit designs.
• Package: TO-220 package.
• Essence: A linear voltage regulator that ensures a stable negative voltage supply.
• Packaging/Quantity: Available in reels or tubes, with varying quantities per package.

Specifications

• Input Voltage: Up to -35V
• Output Voltage: -15V
• Output Current: Up to 1A
• Dropout Voltage: 2V (max)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SG7915T voltage regulator has three pins:

1. Input Pin (VIN): Connects to the input voltage source.
2. Ground Pin (GND): Connected to the ground reference of the circuit.
3. Output Pin (VOUT): Provides the regulated -15V output.

Functional Features

• Voltage Regulation: The SG7915T maintains a constant -15V output voltage regardless of variations in the input voltage or load conditions.
• Short Circuit Protection: Built-in protection mechanism that shuts down the regulator in case of a short circuit, preventing damage to the device and the connected circuitry.
• Thermal Shutdown: When the temperature exceeds a certain threshold, the regulator automatically shuts down to prevent overheating and potential damage.
• Low Dropout Voltage: The regulator can operate with a very small voltage difference between the input and output, minimizing power dissipation.

Advantages and Disadvantages

Advantages: - High precision and stability in regulating the output voltage. - Compact size and easy integration into circuit designs. - Short circuit protection ensures safety. - Thermal shutdown prevents overheating.

Disadvantages: - Dropout voltage of 2V may limit its use in low voltage applications. - Limited output current capacity of 1A.

Working Principles

The SG7915T is a linear voltage regulator that utilizes a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable -15V output.

Detailed Application Field Plans

The SG7915T can be used in various electronic circuits where a stable negative voltage supply is required. Some common application fields include:

1. Audio Amplifiers: Provides a regulated negative voltage for audio amplification circuits.
2. Industrial Control Systems: Used in control circuits to ensure stable negative voltage supply for sensors, actuators, and other components.
3. Power Supply Units: Can be incorporated into power supply designs to generate a regulated negative voltage rail.

Detailed and Complete Alternative Models

• LM7915: A widely used alternative with similar specifications and pin configuration.
• MC7915: Another alternative with comparable characteristics and package type.
• LT1054: A switching voltage regulator that can provide both positive and negative regulated voltages.

Note: This entry provides a brief overview of the SG7915T voltage regulator. For more detailed information, refer to the product datasheet or consult the manufacturer's documentation.

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